Finding the Fourth Proportional to 166,461, 229,716.18 and 91,009.50

Step by Step Solution

1. Step 1: Write the proportion equation
   166,461 : 229,716.18 = 91,009.50 : x
2. Step 2: Convert to fraction form
   166,461/229,716.18 = 91,009.50/x
3. Step 3: Cross multiply
   166,461x = 229,716.18 × 91,009.50
4. Step 4: Simplify right side
   166,461x = 20,906,354,683.71
5. Step 5: Solve for x
   x = 20,906,354,683.71/166,461
6. Step 6: Final answer
   x = 125,593.11